ROLAND HAYWARD. 125 



113. B. angulifernin Lee— Form slightly elongate, convex; color black, 

 scarcely seneous. shining, the elytra with a subniarginal spot about one-fourth 

 from apex and the apex more or less testaceous. Head as wide, or slightly wider 

 than the thorax at apex ; palpi piceous or rufo-piceous ; anteinife about one-half 

 the length of the body, piceous, the first joint often paler. Prothorax distinctly 

 wider than long, much narrower at base than apex ; apex truncate; median line 

 fine, abbreviated at each end; transverse impressions moderately distinct; basal 

 impressions deep, unistriate; sides with the margin narrowly reflexed, arcuate in 

 front, sinuate behind ; bind angles acute. Elytra oblong-ovate, about one-half 

 wider than the thorax, usually finely striate, especially towards the sides; striae 

 punctate ; intervals nearly tlat, the third with the first dorsal puncture about 

 one-fourth from base, the second about one-third from apex. Beneath black, 

 shining. Legs varying from piceous to rufous. Length .13-.16 inch ; 3.25-4 mm. 



Most nearly allied to cautuin. It differs, however, in having the 

 basal impressions of the thorax unistriate and the hind angles acute, 

 and the form is rather more elongate. The elytra are usually much 

 more finely striate. This character varies greatly, however, so that 

 we have every gradation from typical specimens, in which they are 

 very finely striate, to those in which the strise are as deep as in the 

 last-named species. The convexity of the intervals also varies with 

 the depth of the strise, these being nearly flat in typical examples. 



It is known to me from Canada, New Hampshire, Massachusetts, 

 New Jersey, Michigan, Manitoba, Nevada, California and Vancou- 

 ver Island. I have seen one specimen labeled " Florida." 



114. B. acutifrons Lee. — More elongate and less convex than anguUferum ; 



color black, scarcely feneous, shining, the elytra without paler markings. Head 

 scarcely narrower than the thorax at apex ; palpi black ; antennge about one-half 

 as long as the body, black. Prothorax about one-half wider than long, distinctly 

 narrower at base than apex ; apex truncate; median line distinct, entire; trans- 

 verse impressions distinct; basal impressions broad, deep, bistriate ; sides with 

 the margin narrowly reflexed, arcuate in front, sinuate behind ; hind angles rect- 

 angular. Elytra about one-half wider than the thorax, oblong-ovate, moderately 

 deeply striato-punctate ; intervals feebly convex, the third with the first dorsal 

 puncture about one-fourth from base, the second about one-third from apex. Be- 

 neath black, shining. Legs black. Length .14-. 17 inch ; 3.5-4.25 mm. 



This species is most nearly related to the preceding. The form is 

 more elongate and less convex. The thorax is slightly broader as 

 compared with its length, with the sides slightly less deeply sinuate 

 behind, the basal impressions bistriate and the hind angles rectan- 

 gular. The elytra are more deeply striate than in typical specintens 

 of anguUferum, and the subapical and apical pale spots are wanting. 

 The legs also differ in color. 



It was described by Dr. LeConte from Alamosa, Colo. It is 

 known to me also from La Veta in the same State, Utah Lake, 

 Utah and Washington. 



TEANS. AM. ENT. SOC. XXIV. MAY, 1897. 



